Mirrored Storage Pool Configuration

A mirrored storage pool configuration requires at least two disks, preferably
on separate controllers. Many disks can be used in a mirrored configuration.
In addition, you can create more than one mirror in each pool. Conceptually,
a basic mirrored configuration would look similar to the following:

mirror c1t0d0 c2t0d0

Conceptually, a more complex mirrored configuration would look similar
to the following: